I can't. So I had a few minutes and decided to play around with fan settings to see if I could influence or measure Turbo Boost. My thinking was that if I ran the chip hot, then there would be a smaller thermal envelope and there would be minimal effects from turbo boost. Likewise, if I ran the chip cool, there would be a larger thermal envelope and greater effects from Turbo Boost. Here is how I conducted the experiment. Core i7 MBP w/ 8gb RAM, OCZ Vertex 2 SSD 1) Used smcFanControl with max fan (7200 rpm) for ~5 minutes to get my CPU temp to 35-37 C. Ran benchmark. Repeat 3 times 2) Used smcFanControl with minimal fan (2000 rpm) and used "yes > /dev/null" in 4 terminal sessions for ~2 minutes to get my CPU temp to around 95-98 C. (temp hit 95C in about 20 seconds. I let it burn in to generate a lot of heat). Ran benchmark. Repeat 3 times. I used both geekbench and xbench as my benchmarks. Geekbench even separates out the single-threaded performance, which should theoretically benefit the most from Turbo Boost (single-core load turbos 2 bins, multi-core load turbos 1 bin). Regardless of this, my scores never fluctuated when the CPU was hot or cold. Turbo seems to be unaffected by heat, even though heat is allegedly its primary limiting factor. I also used the MacCPUID tool from Intel and continuously monitored/refreshed the CPU speed to see if it ever changed from 2.66ghz. It never did regardless of the workload or temp. I would have thought for sure that the CPU speed would increase during a maxed single thread load under low temps (7200rpm). Nope. "sysctl -a hw |grep cpufreq" also never changed under any circumstance. It always displays 2.66ghz. I also tried to get the CPU to SpeedStep/EIST down, but I couldn't seem to monitor that either. I was using sysctl and MacCPUID, but leaving my system idle for 30 second periods under 90 and 80% battery life had no effect. I'm going to continue to play around with this, but I'm open to ideas on what to try.